25452166090 has 32 divisors (see below), whose sum is σ = 49345102800. Its totient is φ = 9396378624.

The previous prime is 25452166037. The next prime is 25452166109. The reversal of 25452166090 is 9066125452.

It can be written as a sum of positive squares in 8 ways, for example, as 19948455121 + 5503710969 = 141239^2 + 74187^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1742136 + ... + 1756684.

Almost surely, 2^25452166090 is an apocalyptic number.

25452166090 is a deficient number, since it is larger than the sum of its proper divisors (23892936710).

25452166090 is a wasteful number, since it uses less digits than its factorization.

25452166090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28026.

The product of its (nonzero) digits is 129600, while the sum is 40.

The spelling of 25452166090 in words is "twenty-five billion, four hundred fifty-two million, one hundred sixty-six thousand, ninety".