1307907225 has 27 divisors (see below), whose sum is σ = 2343579199. Its totient is φ = 697261200.

The previous prime is 1307907217. The next prime is 1307907229. The reversal of 1307907225 is 5227097031.

The square root of 1307907225 is 36165.

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

It can be written as a sum of positive squares in only one way, i.e., 470846601 + 837060624 = 21699^2 + 28932^2 .

It is not a de Polignac number, because 1307907225 - 2³ = 1307907217 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1307907225.

It is not an unprimeable number, because it can be changed into a prime (1307907229) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 541270 + ... + 543680.

Almost surely, 2^1307907225 is an apocalyptic number.

1307907225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1307907225 is the 36165-th square number.

1307907225 is the 18083-rd centered octagonal number.

It is an amenable number.

1307907225 is a deficient number, since it is larger than the sum of its proper divisors (1035671974).

1307907225 is an frugal number, since it uses more digits than its factorization.

1307907225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4838 (or 2419 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 36.

The cubic root of 1307907225 is about 1093.6012038128.

Multiplying 1307907225 by its sum of digits (36), we get a square (47084660100 = 216990²).

The spelling of 1307907225 in words is "one billion, three hundred seven million, nine hundred seven thousand, two hundred twenty-five".