25435242504 has 48 divisors (see below), whose sum is σ = 78728133120. Its totient is φ = 7267212000.

The previous prime is 25435242493. The next prime is 25435242557. The reversal of 25435242504 is 40524253452.

25435242504 is a `hidden beast` number, since 2 + 54 + 352 + 4 + 250 + 4 = 666.

It is a super-2 number, since 2×25435242504² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 25232872 + ... + 25233879.

It is an arithmetic number, because the mean of its divisors is an integer number (1640169440).

Almost surely, 2^25435242504 is an apocalyptic number.

25435242504 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

25435242504 is an abundant number, since it is smaller than the sum of its proper divisors (53292890616).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25435242504 is a wasteful number, since it uses less digits than its factorization.

25435242504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50466770 (or 50466763 counting only the distinct ones).

The product of its (nonzero) digits is 192000, while the sum is 36.

Adding to 25435242504 its reverse (40524253452), we get a palindrome (65959495956).

The spelling of 25435242504 in words is "twenty-five billion, four hundred thirty-five million, two hundred forty-two thousand, five hundred four".