25046401442 has 16 divisors (see below), whose sum is σ = 37693482840. Its totient is φ = 12481932288.

The previous prime is 25046401439. The next prime is 25046401447. The reversal of 25046401442 is 24410464052.

It can be written as a sum of positive squares in 4 ways, for example, as 19013927881 + 6032473561 = 137891^2 + 77669^2 .

It is a junction number, because it is equal to n+sod(n) for n = 25046401399 and 25046401408.

It is not an unprimeable number, because it can be changed into a prime (25046401447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3809534 + ... + 3816102.

Almost surely, 2^25046401442 is an apocalyptic number.

25046401442 is a deficient number, since it is larger than the sum of its proper divisors (12647081398).

25046401442 is a wasteful number, since it uses less digits than its factorization.

25046401442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12565.

The product of its (nonzero) digits is 30720, while the sum is 32.

Adding to 25046401442 its reverse (24410464052), we get a palindrome (49456865494).

The spelling of 25046401442 in words is "twenty-five billion, forty-six million, four hundred one thousand, four hundred forty-two".