126225299524 has 27 divisors (see below), whose sum is σ = 221965101687. Its totient is φ = 62808173088.

The previous prime is 126225299521. The next prime is 126225299549. The reversal of 126225299524 is 425992522621.

The square root of 126225299524 is 355282.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 38135059524 + 88090240000 = 195282^2 + 296800^2 .

It is a super-3 number, since 3×126225299524³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126225299521) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 247986582 + ... + 247987090.

Almost surely, 2^126225299524 is an apocalyptic number.

126225299524 is the 355282-nd square number.

It is an amenable number.

126225299524 is a deficient number, since it is larger than the sum of its proper divisors (95739802163).

126225299524 is an frugal number, since it uses more digits than its factorization.

126225299524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1720 (or 860 counting only the distinct ones).

The product of its digits is 1555200, while the sum is 49.

Multiplying 126225299524 by its sum of digits (49), we get a square (6185039676676 = 2486974²).

The spelling of 126225299524 in words is "one hundred twenty-six billion, two hundred twenty-five million, two hundred ninety-nine thousand, five hundred twenty-four".