25061411220646 has 32 divisors (see below), whose sum is σ = 40365451441728. Its totient is φ = 11627088506880.

The previous prime is 25061411220641. The next prime is 25061411220661. The reversal of 25061411220646 is 64602211416052.

It is a junction number, because it is equal to n+sod(n) for n = 25061411220599 and 25061411220608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25061411220641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74698006 + ... + 75032758.

It is an arithmetic number, because the mean of its divisors is an integer number (1261420357554).

Almost surely, 2^{25061411220646} is an apocalyptic number.

25061411220646 is a deficient number, since it is larger than the sum of its proper divisors (15304040221082).

25061411220646 is a wasteful number, since it uses less digits than its factorization.

25061411220646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365856.

The product of its (nonzero) digits is 138240, while the sum is 40.

Adding to 25061411220646 its reverse (64602211416052), we get a palindrome (89663622636698).

The spelling of 25061411220646 in words is "twenty-five trillion, sixty-one billion, four hundred eleven million, two hundred twenty thousand, six hundred forty-six".