1625414623491 has 8 divisors (see below), whose sum is σ = 2176520870160. Its totient is φ = 1078959062912.

The previous prime is 1625414623471. The next prime is 1625414623493. The reversal of 1625414623491 is 1943264145261.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1625414623491 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1625414623491.

It is not an unprimeable number, because it can be changed into a prime (1625414623493) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1162670706 + ... + 1162672103.

It is an arithmetic number, because the mean of its divisors is an integer number (272065108770).

Almost surely, 2^{1625414623491} is an apocalyptic number.

1625414623491 is a deficient number, since it is larger than the sum of its proper divisors (551106246669).

1625414623491 is a wasteful number, since it uses less digits than its factorization.

1625414623491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2325343045.

The product of its digits is 1244160, while the sum is 48.

The spelling of 1625414623491 in words is "one trillion, six hundred twenty-five billion, four hundred fourteen million, six hundred twenty-three thousand, four hundred ninety-one".