2501651556220 has 48 divisors (see below), whose sum is σ = 5530183464960. Its totient is φ = 947957097024.

The previous prime is 2501651556203. The next prime is 2501651556247. The reversal of 2501651556220 is 226551561052.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10786317 + ... + 11015803.

It is an arithmetic number, because the mean of its divisors is an integer number (115212155520).

Almost surely, 2^{2501651556220} is an apocalyptic number.

2501651556220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2501651556220 is an abundant number, since it is smaller than the sum of its proper divisors (3028531908740).

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

2501651556220 is a wasteful number, since it uses less digits than its factorization.

2501651556220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258202 (or 258200 counting only the distinct ones).

The product of its (nonzero) digits is 180000, while the sum is 40.

The spelling of 2501651556220 in words is "two trillion, five hundred one billion, six hundred fifty-one million, five hundred fifty-six thousand, two hundred twenty".