1266034625 has 32 divisors (see below), whose sum is σ = 1680790176. Its totient is φ = 948787200.

The previous prime is 1266034621. The next prime is 1266034663. The reversal of 1266034625 is 5264306621.

It is a happy number.

It can be written as a sum of positive squares in 16 ways, for example, as 947162176 + 318872449 = 30776^2 + 17857^2 .

It is not a de Polignac number, because 1266034625 - 2² = 1266034621 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1266034621) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 493847 + ... + 496403.

It is an arithmetic number, because the mean of its divisors is an integer number (52524693).

Almost surely, 2^1266034625 is an apocalyptic number.

It is an amenable number.

1266034625 is a deficient number, since it is larger than the sum of its proper divisors (414755551).

1266034625 is a wasteful number, since it uses less digits than its factorization.

1266034625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2822 (or 2812 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 35.

The square root of 1266034625 is about 35581.3803133043. The cubic root of 1266034625 is about 1081.8038627193.

The spelling of 1266034625 in words is "one billion, two hundred sixty-six million, thirty-four thousand, six hundred twenty-five".