1225157337 has 6 divisors (see below), whose sum is σ = 1769671722. Its totient is φ = 816771552.

The previous prime is 1225157281. The next prime is 1225157387. The reversal of 1225157337 is 7337515221.

It is a happy number.

1225157337 is a `hidden beast` number, since 1 + 2 + 2 + 51 + 573 + 37 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1143724761 + 81432576 = 33819^2 + 9024^2 .

It is not a de Polignac number, because 1225157337 - 2⁸ = 1225157081 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1225157387) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 68064288 + ... + 68064305.

It is an arithmetic number, because the mean of its divisors is an integer number (294945287).

Almost surely, 2^1225157337 is an apocalyptic number.

It is an amenable number.

1225157337 is a deficient number, since it is larger than the sum of its proper divisors (544514385).

1225157337 is a wasteful number, since it uses less digits than its factorization.

1225157337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136128599 (or 136128596 counting only the distinct ones).

The product of its digits is 44100, while the sum is 36.

The square root of 1225157337 is about 35002.2475992614. The cubic root of 1225157337 is about 1070.0332877524.

The spelling of 1225157337 in words is "one billion, two hundred twenty-five million, one hundred fifty-seven thousand, three hundred thirty-seven".