10625561555021 has 4 divisors (see below), whose sum is σ = 12143498920032. Its totient is φ = 9107624190012.

The previous prime is 10625561555003. The next prime is 10625561555027. The reversal of 10625561555021 is 12055516552601.

It is a happy number.

10625561555021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10625561555021 is a prime.

It is a super-2 number, since 2×10625561555021² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10625561555027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 758968682495 + ... + 758968682508.

It is an arithmetic number, because the mean of its divisors is an integer number (3035874730008).

Almost surely, 2^{10625561555021} is an apocalyptic number.

It is an amenable number.

10625561555021 is a deficient number, since it is larger than the sum of its proper divisors (1517937365011).

10625561555021 is an equidigital number, since it uses as much as digits as its factorization.

10625561555021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1517937365010.

The product of its (nonzero) digits is 450000, while the sum is 44.

The spelling of 10625561555021 in words is "ten trillion, six hundred twenty-five billion, five hundred sixty-one million, five hundred fifty-five thousand, twenty-one".