1425254251640 has 32 divisors (see below), whose sum is σ = 3206857122000. Its totient is φ = 570095468544.

The previous prime is 1425254251601. The next prime is 1425254251643. The reversal of 1425254251640 is 461524525241.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1425254251643) 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, 5751416 + ... + 5994104.

Almost surely, 2^{1425254251640} is an apocalyptic number.

1425254251640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1425254251640 is an abundant number, since it is smaller than the sum of its proper divisors (1781602870360).

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

1425254251640 is a wasteful number, since it uses less digits than its factorization.

1425254251640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389519 (or 389515 counting only the distinct ones).

The product of its (nonzero) digits is 384000, while the sum is 41.

Adding to 1425254251640 its reverse (461524525241), we get a palindrome (1886778776881).

The spelling of 1425254251640 in words is "one trillion, four hundred twenty-five billion, two hundred fifty-four million, two hundred fifty-one thousand, six hundred forty".