1265825407 has 12 divisors (see below), whose sum is σ = 1590128848. Its totient is φ = 986356800.

The previous prime is 1265825333. The next prime is 1265825411. The reversal of 1265825407 is 7045285621.

It is not a de Polignac number, because 1265825407 - 2¹⁹ = 1265301119 is a prime.

It is a super-2 number, since 2×1265825407² = 3204627922013431298, which contains 22 as substring.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1265825407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1265825207) 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, 746394 + ... + 748087.

Almost surely, 2^1265825407 is an apocalyptic number.

1265825407 is a deficient number, since it is larger than the sum of its proper divisors (324303441).

1265825407 is a wasteful number, since it uses less digits than its factorization.

1265825407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1494510 (or 1494499 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 40.

The square root of 1265825407 is about 35578.4401990869. The cubic root of 1265825407 is about 1081.7442684278.

The spelling of 1265825407 in words is "one billion, two hundred sixty-five million, eight hundred twenty-five thousand, four hundred seven".