25550235142 has 32 divisors (see below), whose sum is σ = 41274777600. Its totient is φ = 11826217728.

The previous prime is 25550235103. The next prime is 25550235149. The reversal of 25550235142 is 24153205552.

It is a super-2 number, since 2×25550235142² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25550235098 and 25550235107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25550235149) 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, 247323 + ... + 335065.

It is an arithmetic number, because the mean of its divisors is an integer number (1289836800).

Almost surely, 2^25550235142 is an apocalyptic number.

25550235142 is a deficient number, since it is larger than the sum of its proper divisors (15724542458).

25550235142 is a wasteful number, since it uses less digits than its factorization.

25550235142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87940.

The product of its (nonzero) digits is 60000, while the sum is 34.

The spelling of 25550235142 in words is "twenty-five billion, five hundred fifty million, two hundred thirty-five thousand, one hundred forty-two".