25146726220 has 48 divisors (see below), whose sum is σ = 65838705408. Its totient is φ = 7837940160.

The previous prime is 25146726203. The next prime is 25146726223. The reversal of 25146726220 is 2262764152.

It is a self number, because there is not a number n which added to its sum of digits gives 25146726220.

It is not an unprimeable number, because it can be changed into a prime (25146726223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8162982 + ... + 8166061.

It is an arithmetic number, because the mean of its divisors is an integer number (1371639696).

Almost surely, 2^25146726220 is an apocalyptic number.

25146726220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25146726220 is an abundant number, since it is smaller than the sum of its proper divisors (40691979188).

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

25146726220 is a wasteful number, since it uses less digits than its factorization.

25146726220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16329070 (or 16329068 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 37.

The spelling of 25146726220 in words is "twenty-five billion, one hundred forty-six million, seven hundred twenty-six thousand, two hundred twenty".