61602250257 has 12 divisors (see below), whose sum is σ = 90309104080. Its totient is φ = 40455208728.

The previous prime is 61602250223. The next prime is 61602250273. The reversal of 61602250257 is 75205220616.

61602250257 is a `hidden beast` number, since 6 + 1 + 602 + 25 + 0 + 25 + 7 = 666.

It is not a de Polignac number, because 61602250257 - 2⁸ = 61602250001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61602250757) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51079207 + ... + 51080412.

Almost surely, 2^61602250257 is an apocalyptic number.

61602250257 is a gapful number since it is divisible by the number (67) formed by its first and last digit.

It is an amenable number.

61602250257 is a deficient number, since it is larger than the sum of its proper divisors (28706853823).

61602250257 is a wasteful number, since it uses less digits than its factorization.

61602250257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102159692 (or 102159689 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The spelling of 61602250257 in words is "sixty-one billion, six hundred two million, two hundred fifty thousand, two hundred fifty-seven".