1525404412240 has 80 divisors (see below), whose sum is σ = 3558097445760. Its totient is φ = 608179335680.

The previous prime is 1525404412223. The next prime is 1525404412247. The reversal of 1525404412240 is 422144045251.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 1525404412196 and 1525404412205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1525404412247) 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, 68371167 + ... + 68393473.

It is an arithmetic number, because the mean of its divisors is an integer number (44476218072).

Almost surely, 2^{1525404412240} is an apocalyptic number.

1525404412240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1525404412240 is an abundant number, since it is smaller than the sum of its proper divisors (2032693033520).

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

1525404412240 is a wasteful number, since it uses less digits than its factorization.

1525404412240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25060 (or 25054 counting only the distinct ones).

The product of its (nonzero) digits is 51200, while the sum is 34.

Adding to 1525404412240 its reverse (422144045251), we get a palindrome (1947548457491).

The spelling of 1525404412240 in words is "one trillion, five hundred twenty-five billion, four hundred four million, four hundred twelve thousand, two hundred forty".