1615630451925 has 48 divisors (see below), whose sum is σ = 3055571430912. Its totient is φ = 737896689600.

The previous prime is 1615630451923. The next prime is 1615630451933. The reversal of 1615630451925 is 5291540365161.

It is not a de Polignac number, because 1615630451925 - 2¹ = 1615630451923 is a prime.

It is a super-2 number, since 2×1615630451925² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1615630451923) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 837579 + ... + 1983128.

It is an arithmetic number, because the mean of its divisors is an integer number (63657738144).

Almost surely, 2^{1615630451925} is an apocalyptic number.

1615630451925 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1615630451925 is a deficient number, since it is larger than the sum of its proper divisors (1439940978987).

1615630451925 is a wasteful number, since it uses less digits than its factorization.

1615630451925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2821818 (or 2821813 counting only the distinct ones).

The product of its (nonzero) digits is 972000, while the sum is 48.

The spelling of 1615630451925 in words is "one trillion, six hundred fifteen billion, six hundred thirty million, four hundred fifty-one thousand, nine hundred twenty-five".