125402621005 has 32 divisors (see below), whose sum is σ = 160069118976. Its totient is φ = 93986832384.

The previous prime is 125402620997. The next prime is 125402621011. The reversal of 125402621005 is 500126204521.

It is a cyclic number.

It is not a de Polignac number, because 125402621005 - 2³ = 125402620997 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17996032 + ... + 18002998.

It is an arithmetic number, because the mean of its divisors is an integer number (5002159968).

Almost surely, 2^125402621005 is an apocalyptic number.

It is an amenable number.

125402621005 is a deficient number, since it is larger than the sum of its proper divisors (34666497971).

125402621005 is a wasteful number, since it uses less digits than its factorization.

125402621005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7933.

The product of its (nonzero) digits is 4800, while the sum is 28.

Adding to 125402621005 its reverse (500126204521), we get a palindrome (625528825526).

The spelling of 125402621005 in words is "one hundred twenty-five billion, four hundred two million, six hundred twenty-one thousand, five".