125440692621 has 8 divisors (see below), whose sum is σ = 167259131040. Its totient is φ = 83624691312.

The previous prime is 125440692557. The next prime is 125440692697. The reversal of 125440692621 is 126296044521.

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

It is not a de Polignac number, because 125440692621 - 2⁶ = 125440692557 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125440692721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 485590 + ... + 697623.

It is an arithmetic number, because the mean of its divisors is an integer number (20907391380).

Almost surely, 2^125440692621 is an apocalyptic number.

It is an amenable number.

125440692621 is a deficient number, since it is larger than the sum of its proper divisors (41818438419).

125440692621 is a wasteful number, since it uses less digits than its factorization.

125440692621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1218555.

The product of its (nonzero) digits is 207360, while the sum is 42.

The spelling of 125440692621 in words is "one hundred twenty-five billion, four hundred forty million, six hundred ninety-two thousand, six hundred twenty-one".