1552400425 has 12 divisors (see below), whose sum is σ = 1971928476. Its totient is φ = 1211628800.

The previous prime is 1552400417. The next prime is 1552400431. The reversal of 1552400425 is 5240042551.

It can be written as a sum of positive squares in 6 ways, for example, as 10738729 + 1541661696 = 3277^2 + 39264^2 .

It is not a de Polignac number, because 1552400425 - 2³ = 1552400417 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1552400393 and 1552400402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 756244 + ... + 758293.

It is an arithmetic number, because the mean of its divisors is an integer number (164327373).

Almost surely, 2^1552400425 is an apocalyptic number.

It is an amenable number.

1552400425 is a deficient number, since it is larger than the sum of its proper divisors (419528051).

1552400425 is a wasteful number, since it uses less digits than its factorization.

1552400425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1514588 (or 1514583 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 28.

The square root of 1552400425 is about 39400.5130042744. The cubic root of 1552400425 is about 1157.8916382067.

Adding to 1552400425 its reverse (5240042551), we get a palindrome (6792442976).

The spelling of 1552400425 in words is "one billion, five hundred fifty-two million, four hundred thousand, four hundred twenty-five".