1551234452625 has 320 divisors, whose sum is σ = 3412303614720. Its totient is φ = 694101312000.

The previous prime is 1551234452567. The next prime is 1551234452639. The reversal of 1551234452625 is 5262544321551.

1551234452625 is a `hidden beast` number, since 1 + 5 + 5 + 12 + 3 + 4 + 4 + 5 + 2 + 625 = 666.

It is not a de Polignac number, because 1551234452625 - 2¹⁰ = 1551234451601 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 319 ways as a sum of consecutive naturals, for example, 351831421 + ... + 351835829.

It is an arithmetic number, because the mean of its divisors is an integer number (10663448796).

Almost surely, 2^{1551234452625} is an apocalyptic number.

1551234452625 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1551234452625 is an abundant number, since it is smaller than the sum of its proper divisors (1861069162095).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1551234452625 is an frugal number, since it uses more digits than its factorization.

1551234452625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4475 (or 4441 counting only the distinct ones).

The product of its digits is 1440000, while the sum is 45.

The spelling of 1551234452625 in words is "one trillion, five hundred fifty-one billion, two hundred thirty-four million, four hundred fifty-two thousand, six hundred twenty-five".