3125552421 has 16 divisors (see below), whose sum is σ = 4412111040. Its totient is φ = 1962616320.

The previous prime is 3125552369. The next prime is 3125552429. The reversal of 3125552421 is 1242555213.

It is not a de Polignac number, because 3125552421 - 2¹⁸ = 3125290277 is a prime.

It is a super-2 number, since 2×3125552421² = 19538155872837922482, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3125552429) 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, 148620 + ... + 168341.

It is an arithmetic number, because the mean of its divisors is an integer number (275756940).

Almost surely, 2^3125552421 is an apocalyptic number.

It is an amenable number.

3125552421 is a deficient number, since it is larger than the sum of its proper divisors (1286558619).

3125552421 is a wasteful number, since it uses less digits than its factorization.

3125552421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317156.

The product of its digits is 12000, while the sum is 30.

The square root of 3125552421 is about 55906.6402227857. The cubic root of 3125552421 is about 1462.0950127668.

The spelling of 3125552421 in words is "three billion, one hundred twenty-five million, five hundred fifty-two thousand, four hundred twenty-one".