253525690 has 32 divisors (see below), whose sum is σ = 498783744. Its totient is φ = 92015040.

The previous prime is 253525663. The next prime is 253525691. The reversal of 253525690 is 96525352.

253525690 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×253525690² = 128550550979952200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (253525691) 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, 64872 + ... + 68668.

It is an arithmetic number, because the mean of its divisors is an integer number (15586992).

Almost surely, 2^253525690 is an apocalyptic number.

253525690 is a deficient number, since it is larger than the sum of its proper divisors (245258054).

253525690 is a wasteful number, since it uses less digits than its factorization.

253525690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4422.

The product of its (nonzero) digits is 81000, while the sum is 37.

The square root of 253525690 is about 15922.4900690815. The cubic root of 253525690 is about 632.9081057583.

The spelling of 253525690 in words is "two hundred fifty-three million, five hundred twenty-five thousand, six hundred ninety".