25374920535 has 12 divisors (see below), whose sum is σ = 43983195672. Its totient is φ = 13533290928.

The previous prime is 25374920521. The next prime is 25374920573. The reversal of 25374920535 is 53502947352.

25374920535 is a `hidden beast` number, since 2 + 53 + 7 + 49 + 20 + 535 = 666.

It is not a de Polignac number, because 25374920535 - 2⁹ = 25374920023 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 563887123 = 25374920535 / (2 + 5 + 3 + 7 + 4 + 9 + 2 + 0 + 5 + 3 + 5).

It is a congruent number.

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, 281943517 + ... + 281943606.

It is an arithmetic number, because the mean of its divisors is an integer number (3665266306).

Almost surely, 2^25374920535 is an apocalyptic number.

25374920535 is a deficient number, since it is larger than the sum of its proper divisors (18608275137).

25374920535 is a wasteful number, since it uses less digits than its factorization.

25374920535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 563887134 (or 563887131 counting only the distinct ones).

The product of its (nonzero) digits is 1134000, while the sum is 45.

The spelling of 25374920535 in words is "twenty-five billion, three hundred seventy-four million, nine hundred twenty thousand, five hundred thirty-five".