125245720634 has 8 divisors (see below), whose sum is σ = 192450741588. Its totient is φ = 61095473440.

The previous prime is 125245720609. The next prime is 125245720673. The reversal of 125245720634 is 436027542521.

It can be written as a sum of positive squares in 2 ways, for example, as 119891140009 + 5354580625 = 346253^2 + 73175^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a junction number, because it is equal to n+sod(n) for n = 125245720591 and 125245720600.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 763693337 + ... + 763693500.

Almost surely, 2^125245720634 is an apocalyptic number.

125245720634 is a deficient number, since it is larger than the sum of its proper divisors (67205020954).

125245720634 is a wasteful number, since it uses less digits than its factorization.

125245720634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1527386880.

The product of its (nonzero) digits is 403200, while the sum is 41.

The spelling of 125245720634 in words is "one hundred twenty-five billion, two hundred forty-five million, seven hundred twenty thousand, six hundred thirty-four".