25245220253 has 16 divisors (see below), whose sum is σ = 27689014080. Its totient is φ = 22826496000.

The previous prime is 25245220249. The next prime is 25245220261. The reversal of 25245220253 is 35202254252.

It is not a de Polignac number, because 25245220253 - 2² = 25245220249 is a prime.

It is a super-2 number, since 2×25245220253² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25245220153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1975358 + ... + 1988096.

It is an arithmetic number, because the mean of its divisors is an integer number (1730563380).

Almost surely, 2^25245220253 is an apocalyptic number.

It is an amenable number.

25245220253 is a deficient number, since it is larger than the sum of its proper divisors (2443793827).

25245220253 is a wasteful number, since it uses less digits than its factorization.

25245220253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13708.

The product of its (nonzero) digits is 48000, while the sum is 32.

The spelling of 25245220253 in words is "twenty-five billion, two hundred forty-five million, two hundred twenty thousand, two hundred fifty-three".