1245275604 has 18 divisors (see below), whose sum is σ = 3147780090. Its totient is φ = 415091856.

The previous prime is 1245275587. The next prime is 1245275639. The reversal of 1245275604 is 4065725421.

It is a happy number.

1245275604 is a `hidden beast` number, since 1 + 2 + 45 + 2 + 7 + 5 + 604 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1047816900 + 197458704 = 32370^2 + 14052^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×1245275604² = 3101422659835129632, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 34590989 = 1245275604 / (1 + 2 + 4 + 5 + 2 + 7 + 5 + 6 + 0 + 4).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17295459 + ... + 17295530.

Almost surely, 2^1245275604 is an apocalyptic number.

It is an amenable number.

1245275604 is an abundant number, since it is smaller than the sum of its proper divisors (1902504486).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1245275604 is a wasteful number, since it uses less digits than its factorization.

1245275604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34590999 (or 34590994 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 36.

The square root of 1245275604 is about 35288.4627605114. The cubic root of 1245275604 is about 1075.8585113129.

The spelling of 1245275604 in words is "one billion, two hundred forty-five million, two hundred seventy-five thousand, six hundred four".