25457040775 has 6 divisors (see below), whose sum is σ = 31566730592. Its totient is φ = 20365632600.

The previous prime is 25457040761. The next prime is 25457040787. The reversal of 25457040775 is 57704075452.

It is not a de Polignac number, because 25457040775 - 2⁹ = 25457040263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 509140791 + ... + 509140840.

Almost surely, 2^25457040775 is an apocalyptic number.

25457040775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

25457040775 is a deficient number, since it is larger than the sum of its proper divisors (6109689817).

25457040775 is a wasteful number, since it uses less digits than its factorization.

25457040775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1018281641 (or 1018281636 counting only the distinct ones).

The product of its (nonzero) digits is 1372000, while the sum is 46.

The spelling of 25457040775 in words is "twenty-five billion, four hundred fifty-seven million, forty thousand, seven hundred seventy-five".