126780225 has 48 divisors (see below), whose sum is σ = 246275904. Its totient is φ = 56736000.

The previous prime is 126780161. The next prime is 126780229. The reversal of 126780225 is 522087621.

It is not a de Polignac number, because 126780225 - 2⁶ = 126780161 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (126780229) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4815 + ... + 16635.

It is an arithmetic number, because the mean of its divisors is an integer number (5130748).

Almost surely, 2^126780225 is an apocalyptic number.

126780225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

126780225 is a deficient number, since it is larger than the sum of its proper divisors (119495679).

126780225 is a wasteful number, since it uses less digits than its factorization.

126780225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11858 (or 11853 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 126780225 is about 11259.6725085590. The cubic root of 126780225 is about 502.3624533810.

The spelling of 126780225 in words is "one hundred twenty-six million, seven hundred eighty thousand, two hundred twenty-five".