126651825 has 18 divisors (see below), whose sum is σ = 226847894. Its totient is φ = 67547520.

The previous prime is 126651803. The next prime is 126651827. The reversal of 126651825 is 528156621.

It can be written as a sum of positive squares in 3 ways, for example, as 156816 + 126495009 = 396^2 + 11247^2 .

It is not a de Polignac number, because 126651825 - 2⁶ = 126651761 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 126651825.

It is not an unprimeable number, because it can be changed into a prime (126651827) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 281224 + ... + 281673.

Almost surely, 2^126651825 is an apocalyptic number.

126651825 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

126651825 is a deficient number, since it is larger than the sum of its proper divisors (100196069).

126651825 is a wasteful number, since it uses less digits than its factorization.

126651825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 562913 (or 562905 counting only the distinct ones).

The product of its digits is 28800, while the sum is 36.

The square root of 126651825 is about 11253.9692997626. The cubic root of 126651825 is about 502.1928025092.

The spelling of 126651825 in words is "one hundred twenty-six million, six hundred fifty-one thousand, eight hundred twenty-five".