215142025 has 48 divisors (see below), whose sum is σ = 315694080. Its totient is φ = 142401600.

The previous prime is 215142017. The next prime is 215142049. The reversal of 215142025 is 520241512.

215142025 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 215142025 - 2³ = 215142017 is a prime.

It is a super-2 number, since 2×215142025² = 92572181842201250, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 215141987 and 215142005.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 691620 + ... + 691930.

It is an arithmetic number, because the mean of its divisors is an integer number (6576960).

Almost surely, 2^215142025 is an apocalyptic number.

215142025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

215142025 is a deficient number, since it is larger than the sum of its proper divisors (100552055).

215142025 is a wasteful number, since it uses less digits than its factorization.

215142025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 454 (or 449 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 215142025 is about 14667.7205113814. The cubic root of 215142025 is about 599.2045245344.

Adding to 215142025 its reverse (520241512), we get a palindrome (735383537).

The spelling of 215142025 in words is "two hundred fifteen million, one hundred forty-two thousand, twenty-five".