125001005655 has 32 divisors (see below), whose sum is σ = 210845933568. Its totient is φ = 63143942400.

The previous prime is 125001005641. The next prime is 125001005677. The reversal of 125001005655 is 556500100521.

It is not a de Polignac number, because 125001005655 - 2¹⁹ = 125000481367 is a prime.

It is a super-2 number, since 2×125001005655² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2837926 + ... + 2881635.

It is an arithmetic number, because the mean of its divisors is an integer number (6588935424).

Almost surely, 2^125001005655 is an apocalyptic number.

125001005655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

125001005655 is a deficient number, since it is larger than the sum of its proper divisors (85844927913).

125001005655 is a wasteful number, since it uses less digits than its factorization.

125001005655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5719647.

The product of its (nonzero) digits is 7500, while the sum is 30.

The spelling of 125001005655 in words is "one hundred twenty-five billion, one million, five thousand, six hundred fifty-five".