1525002220240 has 40 divisors (see below), whose sum is σ = 3554985457440. Its totient is φ = 608391374976.

The previous prime is 1525002220199. The next prime is 1525002220249. The reversal of 1525002220240 is 420222005251.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1525002220249) 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, 25118134 + ... + 25178773.

It is an arithmetic number, because the mean of its divisors is an integer number (88874636436).

Almost surely, 2^{1525002220240} is an apocalyptic number.

1525002220240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1525002220240 is an abundant number, since it is smaller than the sum of its proper divisors (2029983237200).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1525002220240 is a wasteful number, since it uses less digits than its factorization.

1525002220240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50297299 (or 50297293 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

Adding to 1525002220240 its reverse (420222005251), we get a palindrome (1945224225491).

The spelling of 1525002220240 in words is "one trillion, five hundred twenty-five billion, two million, two hundred twenty thousand, two hundred forty".