20125704177494 has 16 divisors (see below), whose sum is σ = 30242745636480. Its totient is φ = 10044799531200.

The previous prime is 20125704177487. The next prime is 20125704177571. The reversal of 20125704177494 is 49477140752102.

It is a super-2 number, since 2×20125704177494² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1172282 + ... + 6451794.

It is an arithmetic number, because the mean of its divisors is an integer number (1890171602280).

Almost surely, 2^{20125704177494} is an apocalyptic number.

20125704177494 is a deficient number, since it is larger than the sum of its proper divisors (10117041458986).

20125704177494 is a wasteful number, since it uses less digits than its factorization.

20125704177494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5282935.

The product of its (nonzero) digits is 3951360, while the sum is 53.

The spelling of 20125704177494 in words is "twenty trillion, one hundred twenty-five billion, seven hundred four million, one hundred seventy-seven thousand, four hundred ninety-four".