25290720475 has 12 divisors (see below), whose sum is σ = 31874601760. Its totient is φ = 19900893600.

The previous prime is 25290720467. The next prime is 25290720493. The reversal of 25290720475 is 57402709252.

It is not a de Polignac number, because 25290720475 - 2³ = 25290720467 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8290515 + ... + 8293564.

Almost surely, 2^25290720475 is an apocalyptic number.

25290720475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

25290720475 is a deficient number, since it is larger than the sum of its proper divisors (6583881285).

25290720475 is a wasteful number, since it uses less digits than its factorization.

25290720475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16584150 (or 16584145 counting only the distinct ones).

The product of its (nonzero) digits is 352800, while the sum is 43.

The spelling of 25290720475 in words is "twenty-five billion, two hundred ninety million, seven hundred twenty thousand, four hundred seventy-five".