1025256969 has 24 divisors (see below), whose sum is σ = 1638321984. Its totient is φ = 612612000.

The previous prime is 1025256941. The next prime is 1025256979. The reversal of 1025256969 is 9696525201.

It is a happy number.

1025256969 is a `hidden beast` number, since 1 + 0 + 2 + 525 + 69 + 69 = 666.

It is not a de Polignac number, because 1025256969 - 2¹² = 1025252873 is a prime.

It is a super-2 number, since 2×1025256969² = 2102303704966133922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1025256979) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 65902 + ... + 79959.

It is an arithmetic number, because the mean of its divisors is an integer number (68263416).

Almost surely, 2^1025256969 is an apocalyptic number.

It is an amenable number.

1025256969 is a deficient number, since it is larger than the sum of its proper divisors (613065015).

1025256969 is a wasteful number, since it uses less digits than its factorization.

1025256969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145949 (or 145946 counting only the distinct ones).

The product of its (nonzero) digits is 291600, while the sum is 45.

The square root of 1025256969 is about 32019.6341172100. The cubic root of 1025256969 is about 1008.3490883923.

The spelling of 1025256969 in words is "one billion, twenty-five million, two hundred fifty-six thousand, nine hundred sixty-nine".