1250400425 has 12 divisors (see below), whose sum is σ = 1556681616. Its totient is φ = 996330000.

The previous prime is 1250400413. The next prime is 1250400443. The reversal of 1250400425 is 5240040521.

It is a happy number.

It is not a de Polignac number, because 1250400425 - 2¹⁰ = 1250399401 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1250400425.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 93359 + ... + 105908.

It is an arithmetic number, because the mean of its divisors is an integer number (129723468).

Almost surely, 2^1250400425 is an apocalyptic number.

It is an amenable number.

1250400425 is a deficient number, since it is larger than the sum of its proper divisors (306281191).

1250400425 is a wasteful number, since it uses less digits than its factorization.

1250400425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199528 (or 199523 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 1250400425 is about 35361.0014705466. The cubic root of 1250400425 is about 1077.3323580038.

Adding to 1250400425 its reverse (5240040521), we get a palindrome (6490440946).

The spelling of 1250400425 in words is "one billion, two hundred fifty million, four hundred thousand, four hundred twenty-five".