1264626025 has 12 divisors (see below), whose sum is σ = 1688762572. Its totient is φ = 933877440.

The previous prime is 1264626023. The next prime is 1264626047. The reversal of 1264626025 is 5206264621.

It can be written as a sum of positive squares in 6 ways, for example, as 405901609 + 858724416 = 20147^2 + 29304^2 .

It is not a de Polignac number, because 1264626025 - 2¹ = 1264626023 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1264626023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1945254 + ... + 1945903.

Almost surely, 2^1264626025 is an apocalyptic number.

It is an amenable number.

1264626025 is a deficient number, since it is larger than the sum of its proper divisors (424136547).

1264626025 is a wasteful number, since it uses less digits than its factorization.

1264626025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3891180 (or 3891175 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 1264626025 is about 35561.5807438308. The cubic root of 1264626025 is about 1081.4025060260.

The spelling of 1264626025 in words is "one billion, two hundred sixty-four million, six hundred twenty-six thousand, twenty-five".