125105023402 has 8 divisors (see below), whose sum is σ = 188125510212. Its totient is φ = 62396520000.

The previous prime is 125105023399. The next prime is 125105023409. The reversal of 125105023402 is 204320501521.

It can be written as a sum of positive squares in 2 ways, for example, as 74982321241 + 50122702161 = 273829^2 + 223881^2 .

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 (125105023409) 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, 77994849 + ... + 77996452.

Almost surely, 2^125105023402 is an apocalyptic number.

125105023402 is a deficient number, since it is larger than the sum of its proper divisors (63020486810).

125105023402 is a wasteful number, since it uses less digits than its factorization.

125105023402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155991704.

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 125105023402 its reverse (204320501521), we get a palindrome (329425524923).

The spelling of 125105023402 in words is "one hundred twenty-five billion, one hundred five million, twenty-three thousand, four hundred two".