125522542100 has 36 divisors (see below), whose sum is σ = 272411369244. Its totient is φ = 50203956480.

The previous prime is 125522542087. The next prime is 125522542111. The reversal of 125522542100 is 1245225521.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 9178789636 + 116343752464 = 95806^2 + 341092^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1027472 + ... + 1143128.

It is an arithmetic number, because the mean of its divisors is an integer number (7566982479).

Almost surely, 2^125522542100 is an apocalyptic number.

125522542100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125522542100 is an abundant number, since it is smaller than the sum of its proper divisors (146888827144).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

125522542100 is a wasteful number, since it uses less digits than its factorization.

125522542100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126524 (or 126517 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 29.

Adding to 125522542100 its reverse (1245225521), we get a palindrome (126767767621).

The spelling of 125522542100 in words is "one hundred twenty-five billion, five hundred twenty-two million, five hundred forty-two thousand, one hundred".