25420023313504 has 48 divisors (see below), whose sum is σ = 50925448750176. Its totient is φ = 12487062297600.

The previous prime is 25420023313501. The next prime is 25420023313507. The reversal of 25420023313504 is 40531332002452.

It is an interprime number because it is at equal distance from previous prime (25420023313501) and next prime (25420023313507).

It is a self number, because there is not a number n which added to its sum of digits gives 25420023313504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25420023313501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5924892 + ... + 9270619.

It is an arithmetic number, because the mean of its divisors is an integer number (1060946848962).

Almost surely, 2^{25420023313504} is an apocalyptic number.

It is an amenable number.

25420023313504 is an abundant number, since it is smaller than the sum of its proper divisors (25505425436672).

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

25420023313504 is a wasteful number, since it uses less digits than its factorization.

25420023313504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15196439 (or 15196431 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 34.

Adding to 25420023313504 its reverse (40531332002452), we get a palindrome (65951355315956).

The spelling of 25420023313504 in words is "twenty-five trillion, four hundred twenty billion, twenty-three million, three hundred thirteen thousand, five hundred four".