125780368634 has 8 divisors (see below), whose sum is σ = 188672536308. Its totient is φ = 62889523200.

The previous prime is 125780368631. The next prime is 125780368667. The reversal of 125780368634 is 436863087521.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 94155081409 + 31625287225 = 306847^2 + 177835^2 .

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

It is a super-2 number, since 2×125780368634² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (125780368631) 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, 42557 + ... + 503360.

Almost surely, 2^125780368634 is an apocalyptic number.

125780368634 is a deficient number, since it is larger than the sum of its proper divisors (62892167674).

125780368634 is a wasteful number, since it uses less digits than its factorization.

125780368634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 661120.

The product of its (nonzero) digits is 5806080, while the sum is 53.

The spelling of 125780368634 in words is "one hundred twenty-five billion, seven hundred eighty million, three hundred sixty-eight thousand, six hundred thirty-four".