1625656452431 has 16 divisors (see below), whose sum is σ = 1894381004448. Its totient is φ = 1378626816000.

The previous prime is 1625656452377. The next prime is 1625656452509. The reversal of 1625656452431 is 1342546565261.

It is a cyclic number.

It is not a de Polignac number, because 1625656452431 - 2¹⁰ = 1625656451407 is a prime.

It is a super-2 number, since 2×1625656452431² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1625656452431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1625656451431) 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, 38445020 + ... + 38487281.

It is an arithmetic number, because the mean of its divisors is an integer number (118398812778).

Almost surely, 2^{1625656452431} is an apocalyptic number.

1625656452431 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1625656452431 is a deficient number, since it is larger than the sum of its proper divisors (268724552017).

1625656452431 is a wasteful number, since it uses less digits than its factorization.

1625656452431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76932442.

The product of its digits is 5184000, while the sum is 50.

The spelling of 1625656452431 in words is "one trillion, six hundred twenty-five billion, six hundred fifty-six million, four hundred fifty-two thousand, four hundred thirty-one".