125571951554 has 8 divisors (see below), whose sum is σ = 215266202688. Its totient is φ = 53816550660.

The previous prime is 125571951523. The next prime is 125571951559. The reversal of 125571951554 is 455159175521.

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

It is not an unprimeable number, because it can be changed into a prime (125571951559) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4484712542 + ... + 4484712569.

It is an arithmetic number, because the mean of its divisors is an integer number (26908275336).

Almost surely, 2^125571951554 is an apocalyptic number.

125571951554 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

125571951554 is a deficient number, since it is larger than the sum of its proper divisors (89694251134).

125571951554 is an equidigital number, since it uses as much as digits as its factorization.

125571951554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8969425120.

The product of its digits is 1575000, while the sum is 50.

The spelling of 125571951554 in words is "one hundred twenty-five billion, five hundred seventy-one million, nine hundred fifty-one thousand, five hundred fifty-four".