2500542121554 has 12 divisors (see below), whose sum is σ = 5417841263406. Its totient is φ = 833514040512.

The previous prime is 2500542121549. The next prime is 2500542121607. The reversal of 2500542121554 is 4551212450052.

2500542121554 is a `hidden beast` number, since 2 + 50 + 0 + 5 + 42 + 12 + 1 + 554 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2498697848529 + 1844273025 = 1580727^2 + 42945^2 .

It is a super-2 number, since 2×2500542121554² (a number of 26 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 69459503359 + ... + 69459503394.

Almost surely, 2^{2500542121554} is an apocalyptic number.

2500542121554 is an abundant number, since it is smaller than the sum of its proper divisors (2917299141852).

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

2500542121554 is a wasteful number, since it uses less digits than its factorization.

2500542121554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138919006761 (or 138919006758 counting only the distinct ones).

The product of its (nonzero) digits is 80000, while the sum is 36.

The spelling of 2500542121554 in words is "two trillion, five hundred billion, five hundred forty-two million, one hundred twenty-one thousand, five hundred fifty-four".