248220025 has 27 divisors (see below), whose sum is σ = 324122701. Its totient is φ = 188555840.

The previous prime is 248219987. The next prime is 248220029. The reversal of 248220025 is 520022842.

The square root of 248220025 is 15755.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 724201 + 247495824 = 851^2 + 15732^2 .

It is not a de Polignac number, because 248220025 - 2⁷ = 248219897 is a prime.

It is a super-2 number, since 2×248220025² = 123226361622001250, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (248220029) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1811757 + ... + 1811893.

Almost surely, 2^248220025 is an apocalyptic number.

248220025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

248220025 is the 15755-th square number.

248220025 is the 7878-th centered octagonal number.

It is an amenable number.

248220025 is a deficient number, since it is larger than the sum of its proper divisors (75902676).

248220025 is an equidigital number, since it uses as much as digits as its factorization.

248220025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330 (or 165 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 25.

The cubic root of 248220025 is about 628.4618772454.

Multiplying 248220025 by its sum of digits (25), we get a square (6205500625 = 78775²).

248220025 divided by its sum of digits (25) gives a square (9928801 = 3151²).

Adding to 248220025 its reverse (520022842), we get a palindrome (768242867).

The spelling of 248220025 in words is "two hundred forty-eight million, two hundred twenty thousand, twenty-five".